See also: List of individual Iodine isotopes (and general data sources).
General data
Name of the isotope:Iodine-114m; I-114mOther names:Jod-114mSymbol:114mI or 114m53IMass number A:114 (= number of nucleons)Atomic number Z:53 (= number of protons)Neutrons N:61Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.1509433962264 (= neutron-proton ratio)Neutron excess (N-Z):8Excitation energy:265.9 keVIsotopic mass:113.92185(16) u (atomic weight of Iodine-114m)Nuclide mass:113.8927771 u (calculated nuclear mass without electrons)Mass excess:-72.79626 MeVMass defect:1.021436572 u (per nucleus)Nuclear binding energy:951.4620382 MeV (per nucleus) 8.34615823 MeV (average binding energy per nucleon)Half-life:6.2(5) sDecay constant λ:0.11179793234838 s-1Specific activity α:5.909866151918 × 10+20 Bq g-1 15972611221.4 Ci g-1Spin and parity: (nuclear angular momentum)(7)
Radioactive Decay
Half-life T½ = 6.2(5) s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
EC/β+
114Te
91(2) %
Iso
114I
9(2) %
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 61) and isobaric (same nucleon number A = 114) with Iodine-114m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
